South Korea has been keeping an eye on Crypto, yes. But the reason that they are doing that is because it was going out of control. Thhats why the FSC specifically said that they only want the exchanges to abide by the law and pay taxes. A lot of them were doing many trades anonymously and trying to avoid all that. The only South Korean exchanges that will get shut down or investigated will be those that go against the rules set by them. Also, i saw that publication, but i haven't been able to verify it myself. On the other hand, if North Korea were to actually be mining Monero, it wouldn't be surprising. They have sanctions on just about everything, and cryptocurrency is probably one of the few ways the regime can get money. Furthermore, mining is part of what increases value to cryptocurrencies. If they are mining it, using malware or not, it's not exactly a bad thing. The only problem would be what exactly they are doing with Monero and where it's going.